Simultaneous Multiplexer-Free AC-Measurement for Two-Dimensional Impedimetric Sensor Matrices

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The book presents a novel approach to addressing measurement challenges in two-dimensional sensor matrices, specifically targeting the cross-talk effect. It introduces the AC-Zero Potential Circuit (AC-ZPC Type 0) for simultaneous measurements using AC signals of varying frequencies, eliminating the need for multiplexers. Two advanced methods enhance measurement accuracy: AC-ZPC Type 1 corrects deviations through reference elements, while AC-ZPC Type 2 employs voltage followers and additional reference elements to address interface impedance issues and amplifier non-idealities.